GetUnicodeHash() public method

Computes the 24 byte Unicode password hash given the 8 byte server challenge.
Computes the 24 byte Unicode password hash given the 8 byte server challenge.
public GetUnicodeHash ( byte challenge ) : byte[]
challenge byte
return byte[]
Ejemplo n.º 1
0
        /// <exception cref="SharpCifs.Smb.SmbException"></exception>
        public SigningDigest(SmbTransport transport, NtlmPasswordAuthentication auth)
        {
            try
            {
                _digest = MessageDigest.GetInstance("MD5");
            }
            catch (NoSuchAlgorithmException ex)
            {
                if (Log.Level > 0)
                {
                    Runtime.PrintStackTrace(ex, Log);
                }
                throw new SmbException("MD5", ex);
            }
            try
            {
                switch (SmbConstants.LmCompatibility)
                {
                case 0:
                case 1:
                case 2:
                {
                    _macSigningKey = new byte[40];
                    auth.GetUserSessionKey(transport.Server.EncryptionKey, _macSigningKey, 0);
                    Array.Copy(auth.GetUnicodeHash(transport.Server.EncryptionKey), 0, _macSigningKey
                               , 16, 24);
                    break;
                }

                case 3:
                case 4:
                case 5:
                {
                    _macSigningKey = new byte[16];
                    auth.GetUserSessionKey(transport.Server.EncryptionKey, _macSigningKey, 0);
                    break;
                }

                default:
                {
                    _macSigningKey = new byte[40];
                    auth.GetUserSessionKey(transport.Server.EncryptionKey, _macSigningKey, 0);
                    Array.Copy(auth.GetUnicodeHash(transport.Server.EncryptionKey), 0, _macSigningKey
                               , 16, 24);
                    break;
                }
                }
            }
            catch (Exception ex)
            {
                throw new SmbException(string.Empty, ex);
            }
            if (Log.Level >= 5)
            {
                Log.WriteLine("LM_COMPATIBILITY=" + SmbConstants.LmCompatibility);
                Hexdump.ToHexdump(Log, _macSigningKey, 0, _macSigningKey.Length);
            }
        }
Ejemplo n.º 2
0
 /// <exception cref="SharpCifs.Smb.SmbException"></exception>
 internal SmbComSessionSetupAndX(SmbSession session, ServerMessageBlock andx, object
                                 cred) : base(andx)
 {
     Command       = SmbComSessionSetupAndx;
     this.Session  = session;
     this.Cred     = cred;
     _sessionKey   = session.transport.SessionKey;
     _capabilities = session.transport.Capabilities;
     if (session.transport.Server.Security == SmbConstants.SecurityUser)
     {
         if (cred is NtlmPasswordAuthentication)
         {
             NtlmPasswordAuthentication auth = (NtlmPasswordAuthentication)cred;
             if (auth == NtlmPasswordAuthentication.Anonymous)
             {
                 _lmHash        = new byte[0];
                 _ntHash        = new byte[0];
                 _capabilities &= ~SmbConstants.CapExtendedSecurity;
             }
             else
             {
                 if (session.transport.Server.EncryptedPasswords)
                 {
                     _lmHash = auth.GetAnsiHash(session.transport.Server.EncryptionKey);
                     _ntHash = auth.GetUnicodeHash(session.transport.Server.EncryptionKey);
                     // prohibit HTTP auth attempts for the null session
                     if (_lmHash.Length == 0 && _ntHash.Length == 0)
                     {
                         throw new RuntimeException("Null setup prohibited.");
                     }
                 }
                 else
                 {
                     if (DisablePlainTextPasswords)
                     {
                         throw new RuntimeException("Plain text passwords are disabled");
                     }
                     if (UseUnicode)
                     {
                         // plain text
                         string password = auth.GetPassword();
                         _lmHash = new byte[0];
                         _ntHash = new byte[(password.Length + 1) * 2];
                         WriteString(password, _ntHash, 0);
                     }
                     else
                     {
                         // plain text
                         string password = auth.GetPassword();
                         _lmHash = new byte[(password.Length + 1) * 2];
                         _ntHash = new byte[0];
                         WriteString(password, _lmHash, 0);
                     }
                 }
             }
             _accountName = auth.Username;
             if (UseUnicode)
             {
                 _accountName = _accountName.ToUpper();
             }
             _primaryDomain = auth.Domain.ToUpper();
         }
         else
         {
             if (cred is byte[])
             {
                 _blob = (byte[])cred;
             }
             else
             {
                 throw new SmbException("Unsupported credential type");
             }
         }
     }
     else
     {
         if (session.transport.Server.Security == SmbConstants.SecurityShare)
         {
             if (cred is NtlmPasswordAuthentication)
             {
                 NtlmPasswordAuthentication auth = (NtlmPasswordAuthentication)cred;
                 _lmHash      = new byte[0];
                 _ntHash      = new byte[0];
                 _accountName = auth.Username;
                 if (UseUnicode)
                 {
                     _accountName = _accountName.ToUpper();
                 }
                 _primaryDomain = auth.Domain.ToUpper();
             }
             else
             {
                 throw new SmbException("Unsupported credential type");
             }
         }
         else
         {
             throw new SmbException("Unsupported");
         }
     }
 }
Ejemplo n.º 3
0
		/// <exception cref="SharpCifs.Smb.SmbException"></exception>
		public SigningDigest(SmbTransport transport, NtlmPasswordAuthentication auth)
		{
			try
			{
				_digest = MessageDigest.GetInstance("MD5");
			}
			catch (NoSuchAlgorithmException ex)
			{
				if (Log.Level > 0)
				{
					Runtime.PrintStackTrace(ex, Log);
				}
				throw new SmbException("MD5", ex);
			}
			try
			{
                switch (SmbConstants.LmCompatibility)
				{
					case 0:
					case 1:
					case 2:
					{
						_macSigningKey = new byte[40];
						auth.GetUserSessionKey(transport.Server.EncryptionKey, _macSigningKey, 0);
						Array.Copy(auth.GetUnicodeHash(transport.Server.EncryptionKey), 0, _macSigningKey
							, 16, 24);
						break;
					}

					case 3:
					case 4:
					case 5:
					{
						_macSigningKey = new byte[16];
						auth.GetUserSessionKey(transport.Server.EncryptionKey, _macSigningKey, 0);
						break;
					}

					default:
					{
						_macSigningKey = new byte[40];
						auth.GetUserSessionKey(transport.Server.EncryptionKey, _macSigningKey, 0);
						Array.Copy(auth.GetUnicodeHash(transport.Server.EncryptionKey), 0, _macSigningKey
							, 16, 24);
					    break;
					}
				}
			}
			catch (Exception ex)
			{
				throw new SmbException(string.Empty, ex);
			}
			if (Log.Level >= 5)
			{
                Log.WriteLine("LM_COMPATIBILITY=" + SmbConstants.LmCompatibility);
				Hexdump.ToHexdump(Log, _macSigningKey, 0, _macSigningKey.Length);
			}
		}